Claiming and reconciliation
Claims that come back and find their own lines.
Claiming goes wrong in two places: the code on the way out, and the matching on the way back. Both get handled where the work was recorded, rather than in a spreadsheet a fortnight later.
The part that is hard to copy
Keeping the price book current is our job, not yours
The national support catalogue is maintained centrally and updated when the NDIA publishes, and your organisation reads it through an overlay, so you can price your own items on top without forking the national list or being left behind by it. Several competitors have every provider upload and maintain their own copy, which means every one of their customers is separately responsible for noticing that prices changed on 1 July.